Home / 4,218.85-6,329.36-1,621.09

Finding the Fourth Proportional to 4,218.85, 6,329.36 and 1,621.09

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Solution

The fourth proportional to 4,218.85, 6,329.36 and 1,621.09 is: 2,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.85 : 6,329.36 = 1,621.09 : x
  2. Step 2: Convert to fraction form
    4,218.85/6,329.36 = 1,621.09/x
  3. Step 3: Cross multiply
    4,218.85x = 6,329.36 × 1,621.09
  4. Step 4: Simplify right side
    4,218.85x = 10,260,462.20
  5. Step 5: Solve for x
    x = 10,260,462.20/4,218.85
  6. Step 6: Final answer
    x = 2,432.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.